It's like predicting an NFL player's performance based on stats--40 time，bench press, etc. They do these rather arbitrary tests, and over a lot of players there

It's like predicting an NFL player's performance based on stats--40 time，bench press, etc. They do these rather arbitrary tests, and over a lot of players there is some limited positive correlation with performance, but individually it does not mean very much. There are people with amazing stats that do not succeed. Then for baseball players, everyhing changes. Intelligence or smart are low-information, high-emotional-signalling terms. It means more about social status than anything else. Everyone has a mix of abilities. Some of the best engineers are terrible writers. Some are incompetent fathers (Steve Jobs). Some people are great at consuming and regurgitating a lot of info, but bad at original/critical thought. Some who would thrive in one life circumstance may struggle in another. Academically, IQ is supposed to correlate with g, general intelligence. In other words，we're just creatures making up nonsense terms to, at face value, signal about ability, but it's often more of a social construct.